<template>
<div class="list" ref="wrapper">
  <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
             <div class="button"> {{this.currentcity}} </div>
          </div>

        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
            <div class="button-wrapper"
                 v-for="item of hot"
                 :key="item.id"
                 @click="handleCityClick(item.name)"
            >
              <div class="button"> {{item.name}} </div>
            </div>
        </div>
      </div>
      <div class="area" v-for="(item,key) of cities" :key="key" :ref="key">
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list" >
          <div class="item border-bottom"
               v-for="innerItem of item"
               :key="innerItem.id"
               @click="handleCityClick(innerItem.name)"
          >{{innerItem.name}}</div>

        </div>


      </div>
  </div>
</div>
</template>

<script>
import  Bscroll from 'better-scroll'
import {mapState,mapMutations} from  'vuex'
export default {
  name:"CityList",
  props:{
    hot:Array,
    cities:Object,
    letter:String
  },
  computed:{
    ...mapState({
      currentcity : 'city'
    })
  },
  methods:{
    handleCityClick(city){
      //this.$store.commit("changeCity",city)
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  mounted (){
    this.scroll = new Bscroll(this.$refs.wrapper)
  },
  watch:{
    letter(){
      if(this.letter){
        const element= this.$refs[this.letter][0]
        //console.log(element)
        this.scroll.scrollToElement(element)
      }

    }
  }

}
</script>


<style scoped>
  .border-topbottom &:before{
    border-color:#000;
  }
  .border-topbottom &:after{
    border-color:#777;
  }
.title{
  line-height:.44rem;
  background:#eee;
  padding-left:.2rem;
  color:#666;
  font-size:.26rem;
}
  .button-list{
    overflow:hidden;
    padding:.1rem .9em .1rem .1rem;
  }
  .button-wrapper{
    width:33.33%;
    float:left;
  }
  .button{
    padding:.1rem 0;
    margin:.1rem ;
    text-align:center;
    border:.02rem solid #ccc;
    border-radius:.06rem;
  }
  .item-list .item{
    line-height:.76rem;
    color:#666;
    padding-left:.2rem;
  }
  .list{
    overflow:hidden;
    position:absolute;
    left:0;
    top:1.58rem;
    right: 0;
    bottom:0;
  }
</style>
